Grate for gas-producers and means for removing ashes therefrom.



H. F. SMITH. GRATE FOR GAS PRODUCERS AND MEANS FOR REMOVING ASHES THEREPROM.

APPLICATION FILED OCT. 10, 1908.

Patented July 20, 1909.

animate;

1x3 hwooeo arms ful Improvements in Grates for '.Gas-Prosteel rin which is suspended so that a por ii -Mounted upon tional view.

out the ingress or egress of air from the ash a grate inthis' manner, I am enab ed to overcome the objection of channeling along 1 within the chute F is sufficient to balance the 1 lower pressure within the producer. Owing to the fact that thetotal area of the chute F "and A chain elevator D mounted in a frame adapted to extend HARRY F. SMITH- OF LEXINGTON, OHIO.

GBA TE FOR GAS-PRODUCERS AND llEANS FOR REMOVING- ASHES TEREFROM.

No..92s,soe.

' Specification 0! Letters Patent.

Patented July 20, 1-909.

Application filed October 10; 1908. Serial No. 457,143.

To all whom it may concern;

Be itknown that I, HARRYF. SMrrrna citizen of the United States, residing at Lex- I ington, in the county of Richland'and State i of Ohio, have invented certain new and useducers and Means for Removing Ashes j Therefrom, of which the following is a speciiication. 5

My invention relates to an improvement in grates for gas producers and means for 're-i, moving ashes therefrom, and the object is-to provide means whereb the removal of ashes om the ash pitmay e-accomplished withpit. This is accomplished by forming a liq uid sealwithin the ash pit, permitting the removal of'as hes' from 'the ash pit without changing the water level within the produce'ror ash pit, even when there is considerable change in the draft pressure.

Ajgturther object is in the provision of a tio'lnfof t e ring extends into the liquid seal.

the ring is a' grate which is. kept cool by the contact of the water with the ring and the projections from the grate which extend into the water..' In su portthe roducer lining as the blasts of air are coniiiied to thecentral part of the grate.

The invention consists of other novel features of construction and combinations of parts which will be hereinafter described and pointed out in theclaims.

In the accompanying drawings Figure 1 is a top plan view, and Fig. 2 is a vertical sec- A, represents the producer lining, the upl per, ortion of the producer not being shown,

l? is the concrete foundation unon which the producer is mounted. The ash pit C 15 i provided with sloping walls forming a 5 ocket at the bottom to permit of the ashes eingdrawn or removed from the ash 5 1s down into the ash pit' through an opening 2 formed inthe side of the producer. A rectangularbox or chute F extends through an opening which forms a housing for the elevator D. The elevator D beneath the grate above the liquid sea the drainage of travels up ets are links 6, 6. hooks 7, 7, which are adapted to support a through the chuteto discharge} the ashes through the s out E at the 11 per endv of the chute F. Tne ash pit. C is illed {withwater forming a liquid seal which extends up into the producer lining A and into thechute F. The chute F besides forming a j housing for the elevator D forms a'water-sealv preventing any ingress or egress of air into the ash pit, at anytime, either when the elevator is being used to remove the ashes from the ash pit or when the elevator is idle. The.

elevator D is operated by means of a crank 4 or by a belt connection" (not shown). In case it is necessaryto repair the elevator at any time, the frame H- which rests on the sloping-wall of the ash pitand-chute, forms a runner which permits of the elevator being slid into the ash pit, and for drawing it from the ash pit.

Under normal operating conditions, the ash pit is filled with water forming the seal as indicated by the full lines, but when the producer is operated under suction, the pressure within the producer shell will be somewhat less'than that on the outside, and the water level within the box or chute F will fall to a lower point as indicated by the dotted lines, and the water level will recede in the ash pitto the point indicated by dotted lines. The difference in head between the water level within theproducer and the water level is much smaller relatively to the total area of the water surface .within the producer i shell, the water level within the producer varies slightly with the variations in blast pressure.v

Secured to the shell of the producer are brackets 5, 5, and suspended from the bracklonneoted to the links are scale ring, the lower portion of which extends down into the liquid seal. Supported upon the ring is a grate L. This construction provides the ring and beneath the grate which is effectually sealed 0;? from the rest of the ash pit and forms a space for the reception of the gas when the-producer is operated by a down-draft. A tube or pipe M extends through the casingup within the rin and and A- lip this pipe forms an outlet for the gas.

for a space being formed Within 8. extends over the top of'the tube or pi e M to prevent the ashes which pass throng the grate from falling into the thereby choking the pipe and preventing the tion.-

.by heat.

pipe or tube, and

gas from passing therethrough. When the producer is operated as a down-draft producer, the gas must pass into the space under the grate and within the ring as the gas must pass through the center of the grate before it can be discharged. If, however, the producer is being operatedproducer, the grate surface, thus increasing the difficulty with which channels are formed along the producer lining. I. 1th this construction there can be very little variation in the water level, and it is possible to carry the water level much closer to the grate. the grates are kept at all times cool, and prevented from becoming Warped and damaged The ring K extending down into the Water will keep the grate cool to a certain degree, and it is possible to provide the grates with projections O which would extend downward and in cont-act with the water, and thereby convey heat from the grates by direct conduction.

y this invention, I have provided means ashes from level within the producer,

the draft suspending a ring within the supporting a grate thereupon, con ned to the center of the grate, thereby preventing any possibility of channeling, and the gas can be drawn from the space beneath the grate by a tube passing through the progain, means is provided .for coolingthe grate by direct contact with water, which is possible for the reason that there being no change in the water level, the water could be carried very close to the grate-without involving any .difiiculty.

This invention pressure. By producer and the ash it Without permitting the ingress or egress 0 air, while the producer is in opera- This result has been accomplished by the construction which isknown as the water bottom producer, in which grates are not em, ployed, the fuel burden resting 'on ashes, which are supported by the bottom of a water-tight basin, and in which basin the tionable for the edge of the producer shell extends. This construction permits of the Withdrawal of ashes While the lant isin operation, but does not permit of t e use of grates, and is objecreason that any variation in the blast pressure causes a very considerable as an updraft blast is entirely confined to the the blast is' is very important as it is' possible to remove the accumulated ash from of the water contained within the bottom of'the producer. In my apparatus, the area of the water exposed to t e outside air is very-small as compared with the total area ofwater within the producer shell so that a change in draft produces a variation in the outside water level sufficient to balance the difference in draft, but at the same time prevents any considerable i change in the inside water level.

1 Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

p 1. In a gas producer, the combination with {an ash pit having a liquid sealtherein, of a grate, a suspended ring for grate exten ing into the 1i i change in the level seal, and

and maintaining the liquid seal in contact with the ring.

supporting the qui means for removin the ash from the ash pit 2. In a gas producer, the combination with te, of a ring for supportingv thegrate, an

a ra asIi pit, havlng a liquid seal therein extend- I ing to the ring for confining'the gas between I the grate and seal, and means extending within the ring for removing the gas. I I 3. In a gas producer, the combination with I an ash pit having a liquid seal therein, a ring, of means for suspending the ring, a grate mounted on the ring, said ring extending into the liquid seal and means for admitting the blast within the ring and confining it to the grate.

4. In a gas producer, the combination with I a grate for supporting the bed of fuel of the producer, means for supporting the grate, of an ash pit, a 1i uid seal in the ash pit and extending aroun the supporting means of the grate, a removable chute extending through the side of the producer and a liquid forming a seal therein, and a removable conveyer extending thro h the chute into .the ash pit for removing t e ashes from the pit.

5. In a gas producer, the combination with a shell, an ash pit, of a ring, means connected to the shell for supporting the ring, a grate mounted on the ring adaptedto receive the .bed of fuel of the producer, a liquid seal in the ash pit extending to the ring and means "extending within the ring for conducting the gas from the producer. i I In testimony whereof I afiix my signature, i in the presence of two witnesses. J HARRY 'F. SMITH.-- I Witnesses:

SIDNEY L. EARHART,

- W. H. EARHARTI 

